期刊
POLYHEDRON
卷 205, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2021.115322
关键词
Cd(II) methacrylate complex; 1-vinylimidazole; Crystal structure; Ion imprinted polymer; Adsorption
资金
- Giresun University [FEN-BAP-C-160317-04]
A novel [Cd(maa)(2)(vim)(2)H2O]•H2O monomer complex was synthesized using suitable ligands for polymerization. The Cd(II) ion imprinted polymer (Cd(II)-IIP) was prepared by precipitation polymerization technique and characterized using various methods. The adsorption performance and selectivity properties of Cd(II)-IIP were investigated, showing a high adsorption capacity and selectivity for Cd2+ ions. The Langmuir and Freundlich isotherm models were compared with experimental results, and Cd(II) ion content was determined using inductively coupled plasma mass spectrometry (ICP-MS).
A novel [Cd(maa)(2)(vim)(2)H2O]center dot H2O monomer complex was synthesized using methacrylic acid (maaH) and 1-vinylimidazole (vim) that are suitable ligands for polymerization. Cd(II) ion imprinted polymer (Cd(II)-IIP) was prepared by precipitation polymerization technique using monomer complex, EGDMA, and AIBN as functional monomer, crosslinker, and initiator, respectively. The structure of the monomer complex was elucidated by single-crystal X-ray diffraction method. Infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA) methods were used for characterization both of the monomer complex and Cd(II)-IIP. Scanning electron microscopy / energy-dispersive X-ray spectroscopy (SEM/EDX) methods were used for observation surface morphology and content of the polymer surfaces. The adsorption performance and selectivity properties of Cd (II)-IIP were also investigated. The maximum adsorption capacity of Cd(II)-IIP was 43.0 mg/g with 250 mg/L initial Cd(II) concentration at pH:6.0, and the selectivity was higher for Cd2+ ions than that of Pb2+, Ni2+, and Zn2+ as competitor ions. The Langmuir and Freundlich isotherm models were applied comparatively to experimental results. Cd(II) ion content of the solutions determined by inductively coupled plasma mass spectrometry (ICP-MS).
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